Albeet burro wes



(No Model.)

A. BURROWES.

PUNCH.

No. 376,136. Patented Jan. 10, 1888.

INVENTOR WITNESSES ATTORNEYS.

UNITED STATES PATENT OFFICE.

ALBERT BURROWES, OF TORONTO, ONTARIO, CANADA.

PUNCH.

' SPECIFICATION forming part of Letters Patent No. 376,136, datedJanuary 10, 1888, Application filed April 50, 1887. Serial No. 236,632.(No model.) Patented in Canada April 4, 1887, No. 26,388. v

To all whom it may concern.-

Be it known that l, ALBERT BURROWES, of Toronto, in the Province ofOntario and Dominion of Canada, have invented a new and improved Punch,of which the following isa full, clear, and exact description.

My invention relates to a punch *t'or which Letters Patent of theDominion of Canada, No. 26,388, dated April 4,1887, were granted to me.

The object of my invention is to provide a' new and improved punch,especially adapted for punching oblong apertures in belts for lacingtheends of the belts together. 7

The invention consistsof a punch having a straight shank formed with asemicircle at one side, which semicircle continues into parallel sides,a groove being cut on the other side of the shank, so as to form aU-shaped cuttingedge at the lower end of the shank, substantially asshown and described.

Reference is to be had to the accompanying drawings, forming a partofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a perspective view of my improvement in the position forpunching, and

Fig. 2 is aperspective view of the punch.

Heretofore the tool employed for punching holes intoa belt or similararticle consisted of a hollow punch of conical shape, so that theaperture formed by the punch was conical and more or less ragged at theedges, thus injuring the belt and preventing a secure and tight lacing,and the aperture of the tool into which the cut piece of the belt passedbecame blocked by said pieces cutout of the belt. With my improved tool,presently to be described, I am enabled to out clean oblong holes of anydesired length in the belt. Said holes will not draw at the sides andopposite 7 so as to produce at the extreme end of the shank acutting-edge of U shape formed by the sharp edges of the two parallelsides D D and the semicircular side 0, the front of the shank B beingopen.

The tool is used for cutting oblong apertures in'tl1e belt F, forinstanceby first drawing the two lines G and G across the belt,indicating the length of the apertures to be formed, as illustrated inFig. 1. The punch is then placed on the belt with its sides D Dlengthwise of the beltand with the top of the semicircle resting on theline G. The punch A is then pressed through the belt by the blow of ahammer, or other means, and then the punch is withdrawn and is reversedso that the semi circular side rests on the line G, and the parallelsides D meet the cuts previously made. The punch is then again pressedthrough the belt, whereby an oblong piece is cut out of the belt and anoblong hole is formed. Any number of said holes maybe formed across thewidth of the belt between the lines G and G, the holes being preferablyequal distances apart.

It will be seen that by drawing additional lines parallel to theline Gholes of anylength may be formed in the belt. The sides of the holes arestraight and stand at a right angle to the end of the belt.

it will be seen that if the punch should break at its cutting-edge byrough usage, then the broken end can be ground off and the lower endsharpened to any desired shape, as above described, thus forminga toolwhich is as good as new. It will be seen that the groove E in the punchcannot be clogged up by thepiece cut outof the belt, as the respectivepiece always projects at one side of said punch, and can thus be easilyremoved in case it should adhere to the'inside of the sides D D and theside 0. 4

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The punch herein described for forming oblong apertures in belts, havinga straight shank formed with a semicircle at one side, which semicirclecontinues into parallel sides, and an open U-shaped groove cut in theother side of the shank, terminating in a cuttingedge at the lower endof the punch, all substantially as shown and described.

ALBERT BURROWES.

Witnesses:

REGINALD M. ll/IACDONALD, GEORGE O. BUCHANAN.

